سؤال:كيف يتم حفظ ما أدخله المستخدم في التكست بوكس ؟

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يتم التخزين باستخدام RMS record management store ستجد دروس في الموقع عن هذا الأمر باستخدام البحث

 

import javax.microedition.rms.*;
import java.util.Enumeration;
import java.io.*;

public class Store{

   RecordStore recordStore = null;

   public Store() {}

   public Store(String fileName) {
	  try {
		recordStore = RecordStore.openRecordStore(fileName, true);
	  } catch(RecordStoreException rse) {
		rse.printStackTrace();
	  }
   }

   public void close() throws RecordStoreNotOpenException, RecordStoreException {
		if (recordStore.getNumRecords() == 0) {
			String fileName = recordStore.getName();
			recordStore.closeRecordStore();
			recordStore.deleteRecordStore(fileName);
		} else {
			recordStore.closeRecordStore();
		}
   }


   public synchronized void addNewMemo(String record) {
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  DataOutputStream outputStream = new DataOutputStream(baos); 
  try {
   outputStream.writeUTF(record);
  }
  catch (IOException ioe) {
   System.out.println(ioe);
   ioe.printStackTrace();
  }
  byte[] b = baos.toByteArray();
  try {
   recordStore.addRecord(b, 0, b.length);
  }
  catch (RecordStoreException rse) {
   System.out.println(rse);
   rse.printStackTrace();
  }
   }

   public synchronized void delMemo(int id) {
  try {
   recordStore.deleteRecord(id);
  }
  catch (RecordStoreException rse) {
   System.out.println(rse);
   rse.printStackTrace();
  }
   }

   public synchronized void modMemo(int id,String record) {
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  DataOutputStream outputStream = new DataOutputStream(baos); 
  try {
   outputStream.writeUTF(record);
  }
  catch (IOException ioe) {
   System.out.println(ioe);
   ioe.printStackTrace();
  }
  byte[] b = baos.toByteArray();
  try {
   recordStore.setRecord(id,b, 0, b.length);
  }
  catch (RecordStoreException rse) {
   System.out.println(rse);
   rse.printStackTrace();
  }
   }
	public synchronized RecordEnumeration enumerate() throws RecordStoreNotOpenException {
	   return recordStore.enumerateRecords(null, null, false);
   }


}

ارجو ان يفيد هذا الكود :)